49 #define OFFSET(x) offsetof(SCDetContext, x) 50 #define V AV_OPT_FLAG_VIDEO_PARAM 51 #define F AV_OPT_FLAG_FILTERING_PARAM 96 for (
int plane = 0; plane < 4; plane++) {
128 for (
int plane = 0; plane < s->
nb_planes; plane++) {
138 mafd = (double)sad * 100. / count / (1ULL << s->
bitdepth);
171 set_meta(s, frame,
"lavfi.scd.mafd", buf);
173 set_meta(s, frame,
"lavfi.scd.score", buf);
178 set_meta(s, frame,
"lavfi.scd.time",
218 .priv_class = &scdet_class,
int ff_inlink_consume_frame(AVFilterLink *link, AVFrame **rframe)
Take a frame from the link's FIFO and update the link's stats.
void(* ff_scene_sad_fn)(SCENE_SAD_PARAMS)
int av_image_get_linesize(enum AVPixelFormat pix_fmt, int width, int plane)
Compute the size of an image line with format pix_fmt and width width for the plane plane...
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
This structure describes decoded (raw) audio or video data.
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Main libavfilter public API header.
packed RGB 8:8:8, 24bpp, RGBRGB...
ff_scene_sad_fn ff_scene_sad_get_fn(int depth)
int h
agreed upon image height
FF_FILTER_FORWARD_STATUS(inlink, outlink)
static const AVOption scdet_options[]
static const AVFilterPad scdet_outputs[]
#define AV_PIX_FMT_YUV420P12
AVFILTER_DEFINE_CLASS(scdet)
const char * name
Pad name.
static av_cold void uninit(AVFilterContext *ctx)
AVFilterLink ** inputs
array of pointers to input links
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
timestamp utils, mostly useful for debugging/logging purposes
GLsizei GLboolean const GLfloat * value
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
AVDictionary * metadata
metadata.
#define AV_PIX_FMT_YUV422P12
static int query_formats(AVFilterContext *ctx)
#define FF_FILTER_FORWARD_STATUS_BACK(outlink, inlink)
Forward the status on an output link to an input link.
A filter pad used for either input or output.
A link between two filters.
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
static __device__ float fabs(float a)
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
#define av_ts2timestr(ts, tb)
Convenience macro, the return value should be used only directly in function arguments but never stan...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
void * priv
private data for use by the filter
AVRational time_base
Define the time base used by the PTS of the frames/samples which will pass through this link...
simple assert() macros that are a bit more flexible than ISO C assert().
#define AV_PIX_FMT_YUV444P10
static int activate(AVFilterContext *ctx)
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
int w
agreed upon image width
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
#define AV_PIX_FMT_YUV422P9
static int set_meta(SCDetContext *s, AVFrame *frame, const char *key, const char *value)
uint8_t nb_components
The number of components each pixel has, (1-4)
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
packed RGB 8:8:8, 24bpp, BGRBGR...
#define AV_PIX_FMT_YUV444P9
AVFrame * av_frame_clone(const AVFrame *src)
Create a new frame that references the same data as src.
static const AVFilterPad outputs[]
int format
agreed upon media format
static int config_input(AVFilterLink *inlink)
#define AV_LOG_INFO
Standard information.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
#define AV_PIX_FMT_YUV420P10
Describe the class of an AVClass context structure.
const char * name
Filter name.
#define AV_PIX_FMT_YUV420P9
AVFilterLink ** outputs
array of pointers to output links
static enum AVPixelFormat pix_fmts[]
#define AV_PIX_FMT_YUV422P10
#define AV_PIX_FMT_YUV444P12
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
FF_FILTER_FORWARD_WANTED(outlink, inlink)
static double get_scene_score(AVFilterContext *ctx, AVFrame *frame)
static av_always_inline int diff(const uint32_t a, const uint32_t b)
AVFilterContext * dst
dest filter
static const AVFilterPad scdet_inputs[]
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
int depth
Number of bits in the component.
AVPixelFormat
Pixel format.
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.